Snap-fastener.



C. S. CROSS.

SNAP FASTENER.

APPLKCATION FILED NOV. 13. 1917.-

1 ,28,5'26D Patented Dec. 24, 1918.

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CHARLES S CROSS, OF BROOKLYN, NEW YORK, ASSIGNOR "IO CROSS METAL PRODUCTS CORPORATION, A CORPORATION OF NEW YORK.

SNAP-FASTENER.

Specification of Letters Patent.

Patented Dec. 24, 1918.

Application filed November 13, 1917. Serial No. 201,758.

To all-whom it may concern:

Be it known that 1, CHARLES S. Cnoss, a citizen of the United States, and a resident of the borough of Brooklyn, in the county of Kings, city and State of New York, have invented certain new and useful Improvements in Snap-Fasteners, of which the following is a specification.

The present invention relates to improve ments in snap fasteners. Among the objects of the present disclosed embodiment of the invention is the production of a comparatener especially desirable for use upon thin or delicate material.

With these and other objects in view, an embodiment of my invention is shown by way of example, in the accompanying drawings, and this embodiment will be hereinafter more fully described with reference thereto, and the invention will be finally pointed out in the claims.

In the accompanying drawings;

Figure 1 is a plan view of the female member of my improved fastener;

Fig. 2 is a sectional view along the line 22 of Fig. 1;

Fig. 3 is a sectional View along the line 33 of Fig. 1;

Fig. 4 is a plan View of the male member;

Fig. 5 is a side view thereof;

Fig. 6 is a sectional view of the two members of the fastener connected; and

Figs. 7 and 8 are enlarged diagrammatic views showing the relation of the head and spring.

Similar reference characters indicate corresponding parts throughout the several figures of the drawings.

'Referring to the drawings, and more particularlyto Figs. 1 to 3 thereof, the female member of my improved fastener comprises a shell or base portion 10, provided at its periphery with an overturned rim l1, and a central opening 12, having an annular flange 13 overturned at its upper end as at 14c, and between the central opening and the rim 11 there is provided a plurality of eyelets 15 for the purpose of attaching the member.

The shell is concave in shape, so that the flange 13, the upper surface of which is flush with the upper surface of the overturned rim 11, is higher than the depth of the button at its marginal portion. A spring 16 has its circumferential portion 16? held beneath the rim 11, while its spaced end portions 16 and 16 disposed substantially parallelto each other, engage slots 17 and 18 cut into diametrically opposite sides of the flange 13, so that portions of the spring pro ject within the periphery of the opening. The intermediate portions 16 and 16 embrace the diametrically opposite eyelets. This is a well known type of spring, and it will be understood other forms of springs may be employed. The spring 16 lies in a horizontal plane, and the overturned rim 11 has its upper portion substantially flat, and extending for a distance inwardly of the same. The slots 17 and 18 of the flange 13 have their lower edges spaced from the base of the shell so that the spring is supported at its end or central portions 16 'and 16 in raised relation to the dished portion of the shell, while the upper edges of the slots are spaced from the upper end of the flange 13 a distance substantially corresponding to the thickness of the metal from which the shell is formed. The turned over portion 1 1 of the flange may be either turned outwardly as shown, or it may be turned inwardly. Thus the spring which is held in a horizontal plane is supported at its upper and lower sides against movement perpendicular to the plane of the same, but is permitted to move laterally. The upper surface of the female member'is absolutely flat and free from any projections.

The male member of the fastener comprises a dished base portion 20', overturned at its periphery as at 21, and provided centrally with a head 22. Eyelets 23 are pro-- vided surrounding the head for attaching by sewing. The head is of such height that when the same is engaged with the female member, the upper preferably flat surface of the same will' be flush with the upper surface of the female member.

The upper portion of the head which engages the wire, and moves the same later ally, is preferably shaped 'as clearly indicated in Figs. 7 and 8, that is, above the widest portion, the head is convex as at 24c, acting as a cam surface during insertion of the head, permitting the head to be inserted very easily and the spring moved laterally with a relatively small amount of pressure. Below the widest portion the head is concave, as at 25, so that the sprin snaps into place, and the head is firmly hel Withmy improvements, a fastener is provided which is very thin, flat at each side when fastened, and free from projections. It constitutes a firm holding means and may be assembled and detached with ease. As there are no projections, the same will lie flat, will add very little to the thickness of the material,'and will not Wear holes in the same as with the old forms of fasteners.

I have illustrated and described a preferredand satisfactory embodiment of my invention, but it is obvious that changes may be made therein within the spirit and scope thereof, as defined in the appended claims.

' I claim:

1. In a snap fastener of the character described, a female member adapted to be secured at one side of an unperforated piece of material, and comprising a shell provided with a central opening, an upstanding flange surrounding said central opening, an overturned rim at the periphery of said shell, and a spring held between said rim and said flange, portions of said spring projecting within said opening, the upper edge of said flange being substantially flush with the upper side of said rim to provide a flat surface free from projections for engagement with the material. v

2. In a snap fastener of the character described, a female member, adapted to be secured at one side ofan unperforated piece of material, and comprising a dished shell, provided with a central opening, an up,- standing' flange surrounding said central opening 5 and provided with diametrically opposite slots spaced from said shell and from the upper end of said flange, an overturned rim at the periphery of said shell, and a spring held between said rim and said slots of said flange, portions of said spring projecting within said opening, said spring being permitted lateral movement, but being prevented from movement perpendicular to said shell, the upper edge of said flange being substantially flush with the upper side of said rim to providea .fiat surface free from projections for engagement with the material] a y Y 3. In a snap fastener of the character described, a female member, adapted to be sethe material.

with a central opening, an upstanding flange surrounding said central opening, an overturned run at the perlphery of said shell,

, and a spring held between said rim and said flange, portions of said spring projecting within said opening, the upper edge of said flange being substantially flush with the upper side of said rim, said spring lying in a substantially horizontal plane, the overturned portion of said rim being substantially parallel with the portion of said shell, beneath the same to provide afiat surface free from projections for engagement with 4:. In combination, a female member of'a snap fastener, adapted to be secured at one side of an unperforated piece of material, and comprising shell provided with a central opening, an upstanding flange surrounding said central opening, an overturned rim at the periphery of said shell, a

spring held between said rim and said flange, portions of said spring projecting within said opening, the upper edge ofsaid flange being substantially flush with the upper side of saidrim to provide a fiat surface free from projections for engagement with the material, and a male member adapted to be secured at one side of an unperforated piece of material, and comprising a base and a head adapted to be engaged with said spring through said opening, the upper surface of said head when inserted being substantially flush with the upper surface of said female member. j I a 5. In combination, a female memberof a snap fastener, adapted to be secured at one from projections for engagement ,wi th'the material, anda male member adapted to be secured at one s de of an unperforated piece of material, and comprlslng a base and a head adapted to be engaged with saidspring through said opening, the upper surface of said head when inserted being substantially flush with the upper surface of said female member, said head being provided adjacent its upper surface with a convex cam portion adapted to facilitate insertion, and a con-- cave portion below the convex portion adapted to engage said head to firmly and resiliently retain said members together.

.6. In a snap fastener of the character described, a female member adapted to be secured at one side of an unperforated piece flange, portions of said spring projecting of material, and comprising a shell provided Within said opening, the upper edge of said with a central opening, an upstanding flange flange being substantially flush with the 10 surrounding said central opening, said flange upper side of said rim to provide a flat surbeing overturned at its upper edge, an overface free from projections for engagement turned rim at the periphery of said shell, With the material.

and a spring held between said rim and said CHARLES S. CROSS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C." 

